Value Collection 581863BR Hex Socket Cap Screw 1-1/8-7 Unc

Product Description

The VALUE COLLECTION 581863BR is a hex socket cap screw designed for high-strength fastening in demanding industrial and mechanical applications. It features a 1-1/8-7 UNC thread size, a 2.5-inch length under head, and a 7/8-inch hex drive socket. Constructed from alloy steel with a black oxide finish, it delivers corrosion resistance and durability under load. The fully threaded shank maximizes thread engagement throughout the grip length, making it a reliable choice for structural and machine assembly work.

This screw suits a wide range of industrial, manufacturing, and maintenance applications where high tensile strength fasteners are required. The 1-1/8-7 UNC coarse thread pitch is well suited for use in steel and heavy-gauge metal assemblies. The black oxide coating reduces surface friction and provides mild corrosion protection, making this screw appropriate for both indoor and controlled outdoor service environments where a non-reflective finish is preferred.

Key Features

• 1-1/8-7 UNC coarse thread for strong thread engagement in steel and metal substrates
• Fully threaded shank maximizes grip and clamping force
• 7/8-inch hex socket drive for use with standard hex keys or socket drivers
• Alloy steel construction provides high tensile strength per ASME/ANSI B18.3 and ASTM A574 standards
• Black oxide coating offers mild corrosion resistance and a non-reflective finish

Compatibility

Designed as an OEM-style or aftermarket replacement hex socket cap screw conforming to ASME/ANSI B18.3 and ASTM A574 standards, suitable for use in applications requiring a 1-1/8-7 UNC coarse-thread alloy steel cap screw.

Installation Notes

Installation is typically performed by maintenance technicians, millwrights, or mechanical assemblers using a calibrated torque wrench with a 7/8-inch hex bit or key. Ensure mating threads are clean, free of debris, and properly tapped to 1-1/8-7 UNC specification before installation. Apply thread lubricant or anti-seize compound as required by the application. Follow applicable ASME or equipment manufacturer torque specifications for the fastener grade and joint material.